As I am only in my first week of owning my first DJI MPP, my head is on overload trying to understand and retain all the great info I read here. One thing I cant seem to grasp is this....if I use a wifi only device to fly my MPP, if I cache several locations that I know I'll be flying from the most, will those stay or do I have to continue to cache them every time I want to go fly. If they stay then I see no reason to pay extra for a device that has the cellular/GPS function. If I wont follow me, I'll do a quick hotspot to my s10+. I just dont want to have to cache maps each time I take it out.